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Vishay General Semiconductor - Diodes Division SM6T30CAHE3/5B
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- Part No.:
- SM6T30CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHE3/5B.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,441
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Product details
Overview
SM6T30CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and 150 °C max junction temperature - deployed to protect automotive sensor signal lines, MOSFET gate drivers, and industrial I/O interfaces against ESD and inductive switching transients.
For engineers reviewing the SM6T30CAHE3/5B datasheet, SM6T30CAHE3/5B pinout, SM6T30CAHE3/5B application, or SM6T30CAHE3/5B equivalent, key selection criteria include clamping voltage (VC = 49.9 V at IPPM), low leakage (<1 μA at VWM), AEC-Q101 qualification, RoHS compliance, and SMB package compatibility with automated SMT assembly.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping behavior during positive and negative transients without polarity marking. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low inductance for fast response to sub-microsecond surges.
Designed for surface-mount use on 0.2" × 0.2" copper pads, it achieves 600 W peak pulse power handling per JEDEC-standard 10/1000 μs waveform while maintaining thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min / max | 33.3 V / 37.1 V at IT = 1.0 mA - defines precise breakdown threshold for surge detection |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - clamping voltage limiting downstream circuit stress during worst-case surge |
| PPPM | 600 W - peak transient energy absorption capability under standardized surge waveform |
| ID @ VWM | <1 μA - ultra-low reverse leakage preserving signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMT outline with 5.59 mm body length and 2.20 mm height |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, compatible with lead-free reflow (260 °C peak). Bidirectional construction means no cathode/anode marking - terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve identical roles; current flows bidirectionally during overvoltage events |
| Case | Non-electrical mechanical interface | No internal connection; serves only as thermal and mechanical mounting surface |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surge events in automotive ECUs |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114 |
| Glass passivated chip junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >1 kV/ns) |
| RoHS-compliant & halogen-free option available | Meets EU RoHS Directive 2011/65/EU and JEDEC JS709C material restrictions |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping device placed directly at connector entry point to shunt surge energy before reaching sensitive IC inputs. Use Value: Limits transient voltage to ≤49.9 V, preventing latch-up or permanent damage to 3.3 V/5 V sensor signal chains while supporting AEC-Q101 system-level validation. | Use Scenario: Safeguarding PLC digital input modules and fieldbus interfaces (RS-485, Profibus) against induced lightning surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-clamp TVS mounted across differential pair or single-ended line to ground, absorbing 600 W pulses without degradation. Use Value: Maintains signal integrity with <1 μA leakage at 30 V, enabling direct placement on high-impedance inputs without loading effects. |
| MOSFET Gate Driver Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Shielding high-side/low-side gate drivers in motor control inverters from Miller-induced spikes and cross-conduction transients. IC Role / Device Role / Timing Role: Fast-response TVS placed between gate and source (or drain) to clamp dv/dt-induced voltage overshoot during switching transitions. Use Value: Clamps within nanoseconds to ≤49.9 V, preventing gate oxide breakdown in 600 V Si MOSFETs while surviving repeated 12 A peak pulses. | Use Scenario: ESD suppression on USB-C CC lines and AC/DC adapter auxiliary power rails exposed to human-body-model (HBM) discharges. IC Role / Device Role / Timing Role: Primary front-end TVS on low-voltage DC rails (<5 V) to divert 8 kV contact discharge energy before LDO regulators or microcontrollers. Use Value: Delivers 600 W pulse handling with 30 V standoff - sufficient for IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) when combined with series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | 400 W PPPM, SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 Pulse 5a | Select when board space is constrained and surge energy does not exceed 400 W |
| 1.5KE30CA | 1500 W PPPM, DO-201 package (through-hole, larger size, slower response) | Better for high-energy industrial surges but incompatible with SMT automation and PCB density requirements | Choose for legacy through-hole designs requiring >600 W clamping with relaxed layout constraints |
Compared with SMAJ30CA and 1.5KE30CA, SM6T30CAHE3/5B uniquely balances 600 W surge capacity, SMB SMT compatibility, AEC-Q101 qualification, and low-leakage performance - making it optimal for next-generation automotive and industrial edge nodes where reliability, density, and standardization are critical.
Availability
SM6T30CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and RoHS/halogen-free manufacturing alignment.
Supply support for SM6T30CAHE3/5B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping, low leakage, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SM6T30CAHE3/5B at its rated peak pulse current?
The SM6T30CAHE3/5B has a maximum clamping voltage (VC) of 49.9 V when subjected to a 10/1000 μs waveform at its peak pulse current of 12.0 A. This value is measured per JEDEC standards and ensures downstream circuitry remains below destructive voltage thresholds during surge events. The SM6T30CAHE3/5B maintains this clamping performance across its full operating temperature range.
Is SM6T30CAHE3/5B suitable for automotive applications?
Yes, SM6T30CAHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix "HE3". It meets stress test requirements including temperature cycling, high-temperature reverse bias, and ESD per JESD22, and is rated for operation from −65 °C to +150 °C - making it appropriate for engine control units, body electronics, and ADAS sensor interfaces.
What does the "CA" suffix indicate in SM6T30CAHE3/5B?
The "CA" suffix in SM6T30CAHE3/5B denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T30A), SM6T30CAHE3/5B has no polarity marking and functions identically regardless of voltage polarity applied across its terminals.
What is the thermal resistance of SM6T30CAHE3/5B, and how does it affect PCB layout?
SM6T30CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures under sustained power dissipation, designers must provide adequate copper area and avoid excessive trace length. Its junction-to-lead (RθJL) of 20 °C/W supports efficient heat conduction into the PCB plane.
How does SM6T30CAHE3/5B differ from SM6T30A in practical circuit implementation?
SM6T30CAHE3/5B is bidirectional with no polarity marking, while SM6T30A is unidirectional and requires correct cathode orientation relative to circuit ground. In practice, SM6T30CAHE3/5B simplifies layout for AC-coupled or differential lines (e.g., CAN, RS-485), whereas SM6T30A is used where polarity is fixed, such as DC power rail protection. Both share identical VWM, VBR, and PPPM ratings.
SM6T30CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T30CAHE3/5B FAQ
1.How can I place an order for SM6T30CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHE3/5B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SM6T30CAHE3/5B reliable?
The price and inventory of SM6T30CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T30CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHE3/5B?
SM6T30CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHE3/5B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SM6T30CAHE3/5B?
For technical support, including SM6T30CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHE3/5B requirements.
6.How does Aetrix verify that SM6T30CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHE3/5B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SM6T30CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T30CAHE3/5B?
All SM6T30CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHE3/5B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SM6T30CAHE3/5B part is unused and in its original packaging.
Return procedure for SM6T30CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30CAHE3/5B Tags
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